Walking shoes are performance footwear products designed to meet very
specific functional requirements of the sport. The mechanics of walking are
distinct from other activities, such as running or aerobics, so it is important
to wear a walking shoe to get the most comfort and efficiency out of the
activity.

If your primary exercise activity is walking, it is important to buy shoes
designed specifically for walking. Modern walking shoes have been engineered
for the unique stride and stress demands of exercise walking.

Heel Construction

Walking shoes have a low-profile heel with a
slight bevel on the lateral (outer) side of the heel
to steady the foot and ankle, help prepare you for roll-through, and encourage
an efficient foot strike

Shock absorption isn't as big a requirement in walking shoes as it is in more high-impact activity
shoes

The heel on a walking shoe should be specially designed to accommodate the
natural roll-through motion of walking